TLS Online TPP Program

#Question id: 9168


Which of the following statements best describes the interaction between fire and ecosystems?

#9. Diversity of Life Forms
  1. The likelihood of a wildfire occurring in a given ecosystem is highly predictable over the short term.

  2. Many kinds of plants and plant communities have adapted to frequent fires.
  3. The suppression of forest fires by humans has prevented certain communities, such as grasslands, from reaching their climax stage.

  4. Chaparral communities have evolved to the extent that they rarely burn
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TLS Online TPP Program

#Question id: 12072

#7. System Physiology – Animal

If the average hydrostatic pressure in the glomerular capillaries is 50 mm Hg, the hydrostatic pressure in the Bowman’s space is 12 mm Hg, the average colloid osmotic pressure in the glomerular capillaries is 30 mm Hg, and there is no protein in the glomerular ultrafiltrate, what is the net pressure driving glomerular filtration?

TLS Online TPP Program

#Question id: 12074

#7. System Physiology – Animal

Which of the following tends to increase potassium secretion by the cortical collecting tubule?

TLS Online TPP Program

#Question id: 12076

#7. System Physiology – Animal

Furosemide (Lasix) is a diuretic that also produces natriuresis. Which of the following is an undesirable side effect of furosemide due to its site of action on the renal tubule?

TLS Online TPP Program

#Question id: 12099

#10. Ecological Principles

According to the competitive exclusion principle, two species cannot continue to occupy the same

TLS Online TPP Program

#Question id: 12100

#10. Ecological Principles

Prairie dogs once covered the expanses of the Great Plains. Their grazing made the grass more nutritious for the huge herds of bison, and a variety of snakes, raptors, and mammals   preyed on the rodents. In fact, the black- footed ferret (now endangered) specialized in prairie dog predation. Today, growing housing and agricultural developments have covered many prairie dog towns. Which of the following statements about prairie dogs is true?

TLS Online TPP Program

#Question id: 12101

#10. Ecological Principles

The sum total of an organism's interaction with the biotic and abiotic resources of its environment is called its